The new organ stands at the west end of the nave, the north case housing the Great organ at impost level with the swell box behind the lower frets, and the south case housing the pedal organ. The oak case was designed to work in harmony with the restored west window, previously obscured. The carvings were designed by John Brennan, and have been coloured to blend both with the window and the bold roof colours. Gilded pipe mouths and moulding lines complete the picture.

A terraced console is positioned between the two cases, offering the organist good sight to the nave altar.

The interesting west window depicts St Mary the Virgin and St Anne in the upper half, and on the lower left Simon de Montfort, founder of English Parliaments, and to the right, Vashti Queen of Persia, in memory of Vashti de Montfort Wellborne of Barton Manor, Headington.